"I'm very lucky my girlfriend has joined me tonight," he told ET. "It's her first time hearing me sing. So I'm going to do some extra warmups tonight so I don't suck."

How could that even be possible?

"I mean, just kind of like, we joke sing all the time, you know, we just, we harmonize on the radio, but no I haven't really done, it always seems like a cheesy move on my part. I don't really sing for her. like, 'hey you want to hear me sing?' So it's nice that we can both come out and support and then also as an added bonus I get to sing for her also."

The notoriously sarcastic singer also took to Twitter with this confession: